Positioning mechanism for brush machines



Jan. 3, 1928. 1,654,750

W. NOBLE POSITIONING MECHANISM FOR BRUSH MACHINES Filed Feb. 24, 1925 2 Sheets-Sheet 1 INVIiN-LUY:

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Jan. 3, 1928. 1,654,750

w. NOBLE POSITIONING MECHANISM FOR BRUSH MACHINES Filed Feb. 24, 1925 2 Shggts-Shggt 2 Patented Jan. 3, 1928.

. UNITED STATES MASSACHUSETTS.

PATENT-,OFFICE. 1

- WILLIAM NOBLE, or NORTHAMPTQN, MASSACHUSETTS, 'AssIeNoR r PRO-PI-IY-LAC- I 1 BRUSH COMPANY, or NORTHAMPTON, MAssAoHUsETTsn' CORPORATIONOF -POSITIONING' .MECHANISM FOR BRI ISH MACHINES." v

Application filed February The present invention has for its object animprovement on the positioningmecha} nisnr forming part of the brush machine shown in patentto HermanM. Schwartz 5 No. 1,125,187, dated January 19, 1915. In

that machine there is shown a positioning mechanlsm comprising essentially a travelling chain which carries the brush holders,

horizontal and vertical slides for moving the m chain in two directions at right angles to It has been found in practice that this are.

rangement is not altogether satisfactory as the movement of the cam lever on which the vertical slide is hung changes the angle of contact of the roller with the side of the slot and results in cramping and uneven and rapid wear which affects the accuracy of the machine. Furthermore, the accuracy of the machine is affected by the angle of the lever relative to the vertical plate. The present invention therefore has for its object to pr0- vide mechanism fOr actuating the vertical slide of the positioning mechanism of a brush machine which will at the same time permit the proper horizontal movements Without cramping and without diminishing the accuracy of the machine.

In the following description and in the accompanying drawings I have shown the invention as embodied in a brush machine of the type shown in the said patent to Schwartz as that is the manner in which the invention has'been put into actual practice but it will be understood that the invention is not limited to this construction since it is capableof other embodiments.

In the drawings:

Fig.1 isa side elevation ofthe portions of the positioning mechanism of abrush machine of the type shown in the said Schwartz patent, said positioning mecha- The so-called vertical slide which nism; being provided with the improvements embodied inthe present invention.

F ig. 2 is a front. elevation of the parts shown in Fig. 1. Y c Fig, 3 is a section on line 33, Fig. 2. Fig. 4 is a. section on line 1 1, Fig. 2. Referring to thc drawings: At A is shownthe travelling carrier, at B the vertical slide, at .C the horizontal slide, atl) the vertical cam, at E the horizontal cam and at F the cam shaft of a brush machine of the said Schwartz type.

held in fork '12 forming part of a lever 13 The rear end of the lever 13 is pivoted at 1 1 to a fixed parteof the machine and has on its front end a roller 15. This roller contacts with the under side of a swinging block 16 which is furnished with t-runnions 17, 17 inserted in holes in two L-shaped blocks 18. These L-shaped blocks 18 are secured by screws 19 to the upper part of the vertical slide B adjacent the cut-away portion 20 thereof. The swinging block 16,

when in place, forms in effect the upper side of the slot which affords suflicient space for movement of the roller 15 back and forth relativeto the slide, this movement being produced by the action of the horizontal cam E. r

In the operation of the machine the vertical cam acting through the roller 11 swings the cam lever 13 about its pivot 14 and thus raises and lowers the slide B. At the same time the horizontal cam E moves the vertical slide. B sidewise, this movement being per mitted by the slot 20. As the vertical cam D revolves and the lever 13 swings about its The vertical cam acts upon a cam roller 11 pivot 14 its angle to the vertical slide B as v viewed in side elevation, see Figs. 1 and 3, changes and the swinging block 16 swings on its trunnions and accommodates itself to this change in angle maintaining a line contact with the roller in all positions. It will, therefore, be seen that the position vertically of the slide is not affected by the angle of the roller since the swinging action of the block 16 permits the block to adjust itself to all positions of the lever. It will also be seen that the roller 15 contacts throughout its entire length with the under surface of the block 16 and thereforethe wear isdistributed throughout the entire length of the rollerand is not concentrated in any one spot nor is there more Wear on the edges than on the middle. st-ruetlon 18 that the machine is much more accurate in its operation and continued use of the machine does not affect the vertical spacing of the rows of'holes in the brush which is produced by the machine.

'block'secnred to the slide to'provide a contact member for the lever adjustable to vaiiations in angle between the cam actuated lever and the slide.

2. In a pos tioningmechanism for a brush machine and in combination with the horizontal and vertical slides thereof and the respective horizontal and vertical cams The result of this contherefor, a lever actuated by one of said cams to move the corresponding slide and a swinging block secured to the said slide and providing a uniform area of contact between the lever and the said slidewhile permitting movement of said slide in a direction at right angles thereto by the other cam.

.' .3. In a pos tioning mechanism for a brush machine and in combination with the horn zontal and vertical slides thereof and the respective horizontal and vertical cams tl'ierefor, a lever actuated by the vertical cam to lift and lower the vertical slide and having a roller thereon a swinging block securedto said slide and providing a uni}; form area of contact between said roller and said slide while permitting movement of said vertical slide horizontally by the horizontal cam.

'In testimony whereof I aflix my signature.

WILLIAM NOBLE. 

